Well now I'm sad

At least he's back

IMO this might be the most depressing dialogue in the game, even given how dark Shane’s story is.

If you screw up choosing what foods you gift him, you'll get an idea.

Kent has PTSD. went to a Gotoro prison camp. Stardew Valley is located in the Ferngill republic and is at war with the Gotoro Empire. it is noted somewhere that he has to take PTSD medicine from Harvey and he is sleepy a lot of the time, a symptom of PTSD.